package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.MD5Util;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = MD5Util.encryptionMD5(password);
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void add(EmployeeDTO employeeDTO) {



        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setStatus(StatusConstant.ENABLE);

        String password = MD5Util.encryptionMD5(PasswordConstant.DEFAULT_PASSWORD);
        employee.setPassword(password);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //Todo 获取id
        Long currentId = BaseContext.getCurrentId();
        employee.setCreateUser(currentId);
        employee.setUpdateUser(currentId);

        employeeMapper.add(employee);
    }

    @Override
    public PageResult inquire(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

     Page<Employee> page = employeeMapper.inquire(employeePageQueryDTO.getName());
        List<Employee> result = page.getResult();
        long total = page.getTotal();

        return new PageResult(total,result);
    }

    @Override
    public void startOrShut(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);
        employeeMapper.upbate(employee);
    }

    @Override
    public Employee getById(Long id) {

       Employee employee = employeeMapper.getById(id);
        return employee;
    }

    @Override
    public void empUpdate(EmployeeDTO employeeDTO) {
        Long currentId = BaseContext.getCurrentId();
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(currentId);
        employeeMapper.upbate(employee);
    }
@Transactional
    @Override
    public void passwordUpdate(PasswordEditDTO passwordEditDTO) {
    Employee byId = employeeMapper.getById(passwordEditDTO.getEmpId());
    String oldpassword = MD5Util.encryptionMD5(passwordEditDTO.getOldPassword());

    if (!(oldpassword.equals(byId.getPassword()))){
        throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
    }


    String newpassword = MD5Util.encryptionMD5(passwordEditDTO.getNewPassword());
    byId.setPassword(newpassword);
    byId.setUpdateTime(LocalDateTime.now());
    byId.setUpdateUser(BaseContext.getCurrentId());
employeeMapper.upbate(byId);

}

}
